NEC POWERMATE PROFESSIONAL 9000 Service Manual page 34

1-16 Technical Information
Address (Hex)
0290 - 0297
02E8 - 02EF
02F8 - 02FF
0300 - 0301
0330 - 0331
0332 - 0333
0334 - 0335
0376
0377
0377, bit 7
0377, bits 6:0
0378 - 037F
0388- 038D
03B4 - 03B5
03BA
03BC - 03BF
03C0 - 03CA
03CC
03CE - 03CF
03D4 - 03D5
03DA
03E8 - 03EF
03F0 - 03F5
03F6
03F7 (Write)
03F7, bit 7
03F7, bits 6:0
03F8 - 03FF
04D0 - 04D1
0530 - 0537
0604 - 060B
Table 1-4 I/O Address Map
Size Description
8 bytes Hardware monitor
8 bytes COM4/Video (8514A)
8 bytes COM2
2 bytes MPU-401 (MIDI)
2 bytes MPU-401 (MIDI)
2 bytes MPU-401 (MIDI)
2 bytes MPU-401 (MIDI)
1 byte Secondary IDE channel command port
1 byte Floppy channel 2 command
1 bit Floppy disk change, channel 2
7 bits Secondary IDE channel status port
8 bytes LPT1
6 bytes AdLib (FM synthesizer)
2 bytes Video (VGA)
1 byte Video (VGA)
4 bytes LPT3
11 bytes Video (VGA)
1 byte Video (VGA)
2 bytes Video (VGA)
2 bytes Video (VGA)
1 byte Video (VGA)
8 bytes COM3
6 bytes Floppy Channel 1
1 byte Primary IDE channel command port
1 byte Floppy channel 1 command
1 bit Floppy disk change channel 1
7 bits Primary IDE channel status port
8 bytes COM1
2 bytes Edge/level triggered PIC
8 bytes Windows Sound System
8 bytes Windows Sound System